SDL_gpu_shadercross: print help on missing input path

SDL Commits
1 
From 973446fe062e19b1a622eb28279864f23e8ed2c1 Mon Sep 17 00:00:00 2001
From: cosmonaut <[EMAIL REDACTED]>
Date: Fri, 25 Oct 2024 11:51:30 -0700
Subject: [PATCH] print help on missing input path

---
 src/cli.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cli.c b/src/cli.c
index fc692f5..825310e 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -176,6 +176,7 @@ int main(int argc, char *argv[])
     }
     if (!filename) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "%s: missing input path", argv[0]);
+        print_help();
         return 1;
     }
     fileData = SDL_LoadFile(filename, &fileSize);